Fig. 7From: Caffeine-folic acid-loaded-chitosan nanoparticles combined with methotrexate as a novel HepG2 immunotherapy targeting adenosine A2A receptor downstream cascadeThe FTIR spectra of (CS&CS-NPs (A)), (CS&CAF&CAF-CS-NPs (B)), (CS&FA&FA-CS-NPs (C)), (CAF-CS-NPs &FA&CAF-FA-CS-NPs (D))Back to article page